A continuous hole-making device for aircraft covering parts

Abstract

The present invention relates to a continuous hole-making device for aircraft covering parts, which includes a conveying device arranged on a platform. A plurality of drilling platforms are fixedly arranged at equal intervals on the conveying device. A plurality of profiling grooves corresponding to the drilling platforms one by one are also fixedly arranged on the conveying device. The head and tail ends of adjacent two profiling grooves are connected through a transition groove. The trend of the profiling groove is consistent with the center connection line of the hole-making positions on the covering part. Avoidance holes corresponding to the hole-making positions on the covering part are opened on the drilling platforms. A gantry is fixedly arranged on the platform. A sliding seat is slidably connected to the cross beam of the gantry. A hanging frame is fixedly arranged at the bottom of the sliding seat. A drilling mechanism and a guiding mechanism are arranged on the hanging frame. A flattening mechanism is arranged on the drilling mechanism. The guiding mechanism is connected with the profiling groove and the transition groove. The drilling mechanism is in transmission connection with the flattening mechanism. This continuous hole-making device for aircraft covering parts realizes automatic positioning and hole-making, greatly improves the hole-making efficiency, and while making holes, rolls and flattens the covering part at the hole-making position, improving the accuracy of the drill rod for hole-making.

Description

Technical Field

[0001] The present invention relates to the field of aircraft accessory processing, and particularly to a continuous hole-making device for aircraft covering parts. Background Technique

[0002] Multiple connection points are required at the connection between the covering part and the aircraft skeleton, so it is necessary to perform stamping operations on these connection points. Due to the hole number verification, it is necessary to repeatedly adjust the position of the drill rod, which is time-consuming and laborious, resulting in low work efficiency. Moreover, when drilling holes, since the covering part is relatively thin, it is prone to bending, resulting in deviation of the drilling position. In view of this, we propose a continuous hole-making device for aircraft covering parts. Summary of the Invention

[0003] The purpose of the present invention is to provide a continuous hole-making device for aircraft covering parts to solve the problems raised in the above background technique. To achieve the above purpose, the present invention provides the following technical solution: A continuous hole-making device for aircraft covering parts, including a conveying device arranged on a platform. A plurality of drill platforms are fixedly arranged at equal intervals on the conveying device, and a plurality of profiling grooves corresponding to the drill platforms one by one are also fixedly arranged on the conveying device. The head and tail ends of adjacent two profiling grooves are connected by transition grooves, and the trend of the profiling grooves is consistent with the center connection line of the hole-making positions on the covering part. Avoidance holes corresponding to the hole-making positions on the covering part are provided on the drill platforms. A gantry is fixedly arranged on the platform, a sliding seat is slidably connected to the cross beam of the gantry, a hanging frame is fixedly arranged at the bottom of the sliding seat, and a drilling mechanism and a guiding mechanism are arranged on the hanging frame. A flattening mechanism is arranged on the drilling mechanism. The guiding mechanism is connected to the profiling grooves and the transition grooves, and the drilling mechanism is in transmission connection with the flattening mechanism.

[0004] Preferably, the guiding mechanism includes a connecting rod one with an L-shaped structure. The upper end of the connecting rod one is fixedly connected to the hanging frame, and the lower end of the connecting rod one is fixedly connected to a slider, and the slider slides in the profiling grooves and the transition grooves.

[0005] Preferably, a touch switch two is fixedly arranged at the lower end of the connecting rod one. A plurality of touch rods corresponding to the hole-making positions on the covering part one by one are fixedly arranged on the profiling grooves, and the touch rods are in contact with the touch switch two.

[0006] Preferably, the lower end of the connecting rod one is rotatably connected to a connecting rod two by a fixed shaft, and a dust suction hood is fixedly arranged at the end of the connecting rod two far away from the connecting rod one. The lower end of the dust suction hood is located in the profiling grooves and the transition grooves, and a gap is left between the lower end of the dust suction hood and the bottoms of the profiling grooves and the transition grooves. A dust suction pump and a collection box are fixedly arranged on the platform. An air pipe two is connected to the dust suction pump, and the two ends of the air pipe two are respectively connected to the dust suction hood and the collection box.

[0007] Preferably, a second sleeve is sleeved on the peripheral wall of the dust suction hood and rotatably connected to a fixed shaft. The lower ends of the second sleeve are fixedly connected to the two ends of a U-shaped scraper. The middle part of the U-shaped scraper is located below the dust suction hood and contacts the bottoms of the profiling groove and the transition groove. A first gear is fixed to the upper end of the second sleeve. A shaft rod is rotatably connected to the bottom of the second connecting rod. Wheels and a second gear are coaxially fixed to the two ends of the shaft rod, and the second gear is meshed with the first gear.

[0008] Preferably, the drilling mechanism includes a motor fixed to the hanging bracket. The output shaft end of the motor is drivingly connected to a multi-faceted rod. Two vertical hanging rods are fixed to the bottom of the hanging bracket. The lower ends of the two hanging rods are fixed with a first ring bracket. The hanging rods are arranged parallel to the multi-faceted rod. A third touch switch is fixed to one of the hanging rods, and a first touch switch is fixed to the inner side of the first ring bracket.

[0009] Preferably, the hanging rod passes through and is slidably connected to the lifting plate, and the lifting plate is located between the third touch switch and the first touch switch. The upper and lower surfaces of the lifting plate can be in contact with the third touch switch and the first touch switch in a butting manner. A first sleeve is fixedly connected through the middle of the lifting plate. The first sleeve is sleeved on and rotatably connected to a pipe shaft. The upper end of the pipe shaft is sleeved on and slidably connected to the multi-faceted rod. The lower end of the pipe shaft is fixedly connected to a column rod, and the lower end of the column rod is fixedly connected to a drill rod.

[0010] Preferably, the hanging bracket and the lifting plate are connected through a corrugated pipe. An air pump is fixed to the platform. The air pump is connected to the corrugated pipe through a first air pipe.

[0011] Preferably, a groove is formed in the peripheral wall of the column rod. A friction block is slidably connected to the inside of the groove. The friction block is connected to the inner wall of the groove through a third spring. The surface of the friction block facing the outside of the groove is an isosceles trapezoid structure.

[0012] Preferably, the flattening mechanism includes a second ring bracket located between the lifting plate and the first ring bracket. The upper surface of the second ring bracket is connected to the bottom surface of the lifting plate through a first spring. The hanging rod passes through and is slidably connected to the second ring bracket. A plurality of swing rods are hinged to the peripheral wall of the second ring bracket at equal intervals along the circumferential direction. A rolling cylinder is hinged to the end of the swing rod far from the second ring bracket. The middle part of the swing rod is connected to the outer peripheral wall of the first ring bracket through a second spring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] In the present invention, a profiling groove is provided that is consistent with the connecting line direction of the punching positions on the covering piece. Under the drive of the guiding mechanism, the drilling mechanism moves along the connecting line of the punching positions and punches the punching positions, realizing automatic and continuous positioning punching, greatly improving the hole-making efficiency. During the punching process, the covering piece at the punching position is rolled and flattened by the flattening mechanism, improving the punching accuracy of the drill rod. Description of the Drawings

[0015] Figure 1 Schematic diagram of the general assembly cross-section structure of the present invention Figure One ;

[0016] Figure 2 Schematic diagram of the general assembly cross-section structure of the present invention Figure Two ;

[0017] Figure 3 Top view of two adjacent profiling grooves in the present invention;

[0018] Figure 4 Schematic diagram of the cross-section structure of the pipe shaft, lifting plate, ring frame 1 and ring frame 2 in the present invention;

[0019] Figure 5 is Figure 4 Enlarged structure diagram at position B in;

[0020] Figure 6 is Figure 2 A-A cross-section structure diagram in;

[0021] Figure 7 is Figure 6 C-C cross-section structure diagram in.

[0022] In the figure: 1, floor; 2, conveying equipment; 3, drill floor; 4, avoidance hole; 5, gantry; 6, sliding seat; 7, hanging bracket; 8, motor; 9, suspension rod; 10, ring frame 1; 11, bushing 1; 12, pipe shaft; 13, ring frame 2; 14, column rod; 15, drill pipe; 16, spring 1; 17, swing rod; ١٨, rolling roller; 19, touch switch 1; 20, lifting plate; 21, bellows; 22, air pump; 23, air pipe 1; 24, connecting rod 1; 25, profiling groove; 26, slider; 27, touch switch 2; 28, touch switch 3; 29, touch rod; 30, spring 2; 31, multi-faceted rod; 32, groove; 33, friction block; 34, spring 3; 35, transition groove; 36, connecting rod 2; 37, dust suction hood; 38, bushing 2; 39, U-shaped scraping frame; 40, gear 1; 41, walking wheel; 42, gear 2; 43, shaft rod; 44, dust suction pump; 45, air pipe 2; 46, collection box. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0024] Please refer to Figures 1 to 7, the present invention provides a technical solution: a continuous hole-making device for aircraft covering parts, including a conveying device 2 arranged on a floor 1. A plurality of drilling platforms 3 are fixedly arranged at equal intervals on the conveying device 2, and a plurality of profiling grooves 25 corresponding to the drilling platforms 3 one by one are also fixedly arranged on the conveying device 2. The head and tail ends of two adjacent profiling grooves 25 are connected by a transition groove 35, and the direction of the profiling groove 25 is consistent with the center connection line of the punching positions on the covering part. An avoidance hole 4 corresponding to the punching position of the covering part is arranged on the drilling platform 3. A gantry 5 is fixedly arranged on the floor 1. A sliding seat 6 is slidably connected to the cross beam of the gantry 5. A hanging frame 7 is fixedly arranged at the bottom of the sliding seat 6, and a drilling mechanism and a guiding mechanism are arranged on the hanging frame 7. A flattening mechanism is arranged on the drilling mechanism. The guiding mechanism is connected to the profiling groove 25 and the transition groove 35, and the drilling mechanism is in transmission connection with the flattening mechanism.

[0025] In this embodiment, the guiding mechanism includes a connecting rod one 24 with an L-shaped structure. The upper end of the connecting rod one 24 is fixedly connected to the hanging frame 7, and the lower end of the connecting rod one 24 is fixedly connected to a slider 26. The slider 26 slides in the profiling groove 25 and the transition groove 35. A touch switch two 27 is fixedly arranged at the lower end of the connecting rod one 24. A plurality of touch rods 29 corresponding to the punching positions on the covering part one by one are fixedly arranged on the profiling groove 25, and the touch rod 29 is in contact with the touch switch two 27. The lower end of the connecting rod one 24 is rotatably connected to a connecting rod two 36 by a fixed shaft, and a dust suction hood 37 is fixedly arranged at the end of the connecting rod two 36 far away from the connecting rod one 24. The lower end of the dust suction hood 37 is located in the profiling groove 25 and the transition groove 35, and a gap is left between the lower end of the dust suction hood 37 and the bottom of the profiling groove 25 and the transition groove 35. A dust suction pump 44 and a collection box 46 are fixedly arranged on the floor 1. An air pipe two 45 is connected to the dust suction pump 44. The two ends of the air pipe two 45 are respectively connected to the dust suction hood 37 and the collection box 46. A sleeve two 38 is sleeved and rotatably connected to the peripheral wall of the dust suction hood 37 by a fixed shaft. The two ends of the lower end of the sleeve two 38 are fixedly connected to the two ends of a U-shaped scraping frame 39, and the middle part of the U-shaped scraping frame 39 is located below the dust suction hood 37 and is in contact with the bottom of the profiling groove 25 and the transition groove 35. A gear one 40 is fixedly arranged at the upper end of the sleeve two 38. A shaft rod 43 is rotatably connected to the bottom of the connecting rod two 36 by a fixed shaft, and a traveling wheel 41 and a gear two 42 are coaxially fixedly arranged at both ends of the shaft rod 43, and the gear two 42 is meshed and connected with the gear one 40.

[0026] In this embodiment, the drilling mechanism includes a motor 8 fixed on a suspension bracket 7, and the output shaft end of the motor 8 is drivingly connected to a multi-faceted rod 31. Two vertically downward suspension rods 9 are fixed to the bottom of the suspension bracket 7. The lower ends of the two suspension rods 9 are fixed with a first ring bracket 10, and the suspension rods 9 are arranged parallel to the multi-faceted rod 31. A third touch switch 28 is fixed on one of the suspension rods 9. The first touch switch 19 is fixed to the inner side of the first ring bracket 10. The suspension rod 9 passes through and is slidably connected to the lifting plate 20, and the lifting plate 20 is located between the third touch switch 28 and the first touch switch 19. The upper and lower surfaces of the lifting plate 20 can be in contact with the third touch switch 28 and the first touch switch 19 in a butting manner. A first shaft sleeve 11 is fixedly penetrated through the middle of the lifting plate 20. The first shaft sleeve 11 is sleeved and rotatably connected to a pipe shaft 12 in a fixed-axis manner. The upper end of the pipe shaft 12 is sleeved and slidably connected to the multi-faceted rod 31. The lower end of the pipe shaft 12 is fixedly connected to a column rod 14, and the lower end of the column rod 14 is fixedly connected to a drill bit 15. The suspension bracket 7 and the lifting plate 20 are connected by a corrugated pipe 21. An air pump 22 is fixed on the base table 1. The air pump 22 is connected to the corrugated pipe 21 through a first air pipe 23. A groove 32 is formed in the peripheral wall of the column rod 14, and a friction block 33 is slidably connected to the inside of the groove 32. The friction block 33 is connected to the inner wall of the groove 32 through a third spring 34. The surface of the friction block 33 facing the outside of the groove 32 is an isosceles trapezoid structure.

[0027] In this embodiment, the flattening mechanism includes a second ring bracket 13. The second ring bracket 13 is located between the lifting plate 20 and the first ring bracket 10. The upper surface of the second ring bracket 13 is connected to the bottom surface of the lifting plate 20 through a first spring 16. The suspension rod 9 passes through and is slidably connected to the second ring bracket 13. A plurality of swing rods 17 are equally spaced and hinged to the peripheral wall of the second ring bracket 13 along the circumferential direction. The end of the swing rod 17 away from the second ring bracket 13 is hinged to a rolling roller 18, and the middle of the swing rod 17 is connected to the outer peripheral wall of the first ring bracket 10 through a second spring 30.

[0028] The working principle and advantages of the present invention: When the continuous hole-making device for aircraft coverings is in use, the working process is as follows:

[0029] As Figure 1 、 Figure 2 and Figure 3 shown, the covering to be drilled is fixed on the drilling table 3, and the corresponding profiling grooves 25 are fixed on the conveying device 2 according to the connection line of the drilling positions. The adjacent profiling grooves 25 are connected by a transition groove 35. In the initial state, as Figure 1 shown, the corrugated pipe 21 contracts, the lifting plate 20 is at a high position and is in contact with the third touch switch 28 in a butting manner. At this time, under the action of the second spring 30, the swing rod 17 moves closer to the first ring bracket 10.

[0030] After the installation of the covering piece and the profiling groove 25 is completed, the conveying device 2 and the dust suction pump 44 are controlled by the controller to work, so that the conveying device 2 drives the drilling table 3 and the profiling groove 25 to move, and the slider 26 slides in the profiling groove 25. When the slider 26 receives the thrust of the profiling groove 25 in the direction perpendicular to the drilling table 3, the slider 26 drives the hanging bracket 7 and the sliding seat 6 to move adaptively on the cross beam of the gantry 5 through the first connecting rod 24. When the second touch switch 27 abuts against the touch rod 29 on the profiling groove 25, the second touch switch 27 transmits the touch signal of the touch rod 29 to the controller, and the controller controls the conveying device 2 to stop working. At this time, the drill rod 15 is just above the punching position corresponding to the touch rod 29. At the same time, the controller controls the motor 8 and the air pump 22 to work, so that the motor 8 drives the multi-faceted rod 31 to rotate, the multi-faceted rod 31 drives the pipe shaft 12 to rotate, and then the pipe shaft 12 drives the column rod 14 and the drill rod 15 to rotate. After the air pump 22 works, air is conveyed into the corrugated pipe 21 through the first air pipe 23, as Figure 4 shown, so that the corrugated pipe 21 pushes the lifting plate 20 to move downward, and then the lifting plate 20 drives the pipe shaft 12, the column rod 14 and the drill rod 15 to move downward, so that the drill rod 15 approaches the punching position and punches the punching position of the covering piece. When the drill rod 15 drills out a hole, the friction block 33 driven by the column rod 14 polishes the upper edge, inner wall and lower edge of the hole to remove burrs, thereby improving the hole-making quality. When the lifting plate 20 abuts against the first touch switch 19, the first touch switch 19 transmits the touch signal of the lifting plate 20 to the controller, and the controller controls the air pump 22 to work in the reverse direction, so that the corrugated pipe 21 contracts and drives the lifting plate 20 to move upward, so that the lifting plate 20 drives the pipe shaft 12, the column rod 14 and the drill rod 15 to move upward. And when the lifting plate 20 resets and abuts against the third touch switch 28, the third touch switch 28 transmits the touch signal of the lifting plate 20 to the controller, and the controller controls the air pump 22 and the motor 8 to stop working, and at the same time controls the conveying device 2 to work again to punch the next punching position, realizing automatic and continuous positioning punching and greatly improving the hole-making efficiency.

[0031] As described above, during the downward movement of the lifting plate 20, the ring frame two 13 is also driven to move downward by the first spring 16, and the ring frame two 13 moves downward through the swing rod 17 and the rolling cylinder 18, so that the rolling cylinder 18 contacts the surface of the covering member prior to the drill rod 15. When the rolling cylinder 18 contacts the covering member, the rolling cylinder 18 rolls in a direction away from the punching position, thereby rolling and flattening the covering member at the punching position to improve the punching accuracy of the drill rod 15. At the same time that the rolling cylinder 18 rolls in a direction away from the punching position, the second spring 30 is stretched by the swing rod 17, so that the second spring 30 obtains a restoring force. When the lifting plate 20 moves upward, the pressure of the first spring 16 on the ring frame two 13 gradually decreases, and under the action of the restoring force of the second spring 30, the ring frame two 13 moves upward and resets, and at the same time, the swing rod 17 drives the rolling cylinder 18 to roll and reset in a direction close to the punching position.

[0032] As Figure 6 and Figure 7 shown, while the slider 26 slides in the profiling groove 25, the first connecting rod 24 drives the dust suction hood 37 to move in the profiling groove 25 through the second connecting rod 36, so that the traveling wheels 41 roll on the upper surface of the profiling groove 25. Thereby, the traveling wheels 41 drive the second gear 42 to rotate through the shaft rod 43. While the second gear 42 rotates, the U-shaped scraping frame 39 is driven to rotate in the profiling groove 25 through the first gear 40 and the second sleeve 38, so that the U-shaped scraping frame 39 scrapes off the dirt on the bottom and inner wall of the groove. And the dust suction pump 44 sucks away the dirt in the profiling groove 25 through the second air pipe 45 and the dust suction hood 37 and transports it into the collection box 46, thereby ensuring that the profiling groove 25 is clean, avoiding dirt from blocking the smooth sliding of the slider 26, and thus improving the punching accuracy. After the hole making is completed, the covering member can be removed from the drilling table 3.

[0033] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0034] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A continuous hole-making device for aircraft covering parts, comprising a conveying device (2) arranged on a floor (1), characterized in that: A plurality of drilling platforms (3) are fixedly arranged at equal intervals on the conveying device (2), and a plurality of profiling grooves (25) corresponding to the drilling platforms (3) one by one are also fixed on the conveying device (2). The head and tail ends of two adjacent profiling grooves (25) are connected by a transition groove (35), and the direction of the profiling groove (25) is consistent with the center connection line of the punching positions on the covering part. Avoidance holes (4) corresponding to the punching positions on the covering part are formed in the drilling platform (3). A gantry (5) is fixed on the floor (1). A sliding seat (6) is slidably connected to the cross beam of the gantry (5). A hanging frame (7) is fixed to the bottom of the sliding seat (6), and a drilling mechanism and a guiding mechanism are arranged on the hanging frame (7). A flattening mechanism is arranged on the drilling mechanism. The guiding mechanism is connected to the profiling groove (25) and the transition groove (35), and the drilling mechanism is in transmission connection with the flattening mechanism; The guiding mechanism includes a connecting rod one (24) with an L-shaped structure. The upper end of the connecting rod one (24) is fixedly connected to the hanging frame (7), and the lower end of the connecting rod one (24) is fixedly connected to a slider (26). The slider (26) slides in the profiling groove (25) and the transition groove (35); A touch switch two (27) is fixed to the lower end of the connecting rod one (24). A plurality of touch rods (29) corresponding to the punching positions on the covering part one by one are fixed on the profiling groove (25), and the touch rods (29) are in contact with the touch switch two (27); The lower end of the connecting rod one (24) is rotatably connected to a connecting rod two (36) by a fixed shaft. A dust suction hood (37) is fixed to the end of the connecting rod two (36) far away from the connecting rod one (24). The lower end of the dust suction hood (37) is located in the profiling groove (25) and the transition groove (35), and a gap is left between the lower end of the dust suction hood (37) and the bottoms of the profiling groove (25) and the transition groove (35). A dust suction pump (44) and a collection box (46) are fixed on the floor (1). An air pipe two (45) is connected to the dust suction pump (44). The two ends of the air pipe two (45) are respectively connected to the dust suction hood (37) and the collection box (46); A sleeve two (38) is sleeved on the peripheral wall of the dust suction hood (37) and is rotatably connected to the dust suction hood (37) by a fixed shaft. The two ends of the lower end of the sleeve two (38) are fixedly connected to the two ends of a U-shaped scraping frame (39). The middle part of the U-shaped scraping frame (39) is located below the dust suction hood (37), and the middle part of the U-shaped scraping frame (39) is in contact with the bottoms of the profiling groove (25) and the transition groove (35). A gear one (40) is fixed to the upper end of the sleeve two (38). A shaft rod (43) is rotatably connected to the bottom of the connecting rod two (36) by a fixed shaft. A traveling wheel (41) and a gear two (42) are coaxially fixed to the two ends of the shaft rod (43), and the gear two (42) is meshed with the gear one (40).

2. The continuous hole-making device for aircraft covering parts according to claim 1, characterized in that: The drilling mechanism includes a motor (8) fixed on a suspension bracket (7), and the output shaft end of the motor (8) is drivingly connected to a multi-faceted rod (31). Two vertically downward suspension rods (9) are fixed to the bottom of the suspension bracket (7). The lower ends of the two suspension rods (9) are fixed with a first ring frame (10), and the suspension rods (9) are arranged parallel to the multi-faceted rod (31). A third touch switch (28) is fixed on one of the suspension rods (9), and a first touch switch (19) is fixed on the inner side of the first ring frame (10).

3. The continuous hole-making device for aircraft covering parts according to claim 2, characterized in that: The suspension rod (9) passes through and is slidably connected to a lifting plate (20), and the lifting plate (20) is located between the third touch switch (28) and the first touch switch (19). The upper and lower surfaces of the lifting plate (20) can be in abutting contact with the third touch switch (28) and the first touch switch (19). A first shaft sleeve (11) passes through and is fixed in the middle of the lifting plate (20). The first shaft sleeve (11) is sleeved and rotatably connected to a pipe shaft (12). The upper end of the pipe shaft (12) is sleeved and slidably connected to the multi-faceted rod (31). The lower end of the pipe shaft (12) is fixedly connected to a column rod (14), and the lower end of the column rod (14) is fixedly connected to a drill rod (15).

4. The continuous hole-making device for aircraft covering parts according to claim 3, wherein: The suspension bracket (7) and the lifting plate (20) are connected by a corrugated pipe (21). An air pump (22) is fixed on the floor (1). The air pump (22) is connected to the corrugated pipe (21) through a first air pipe (23).

5. The continuous hole-making device for aircraft covering parts according to claim 3, wherein: A groove (32) is formed in the peripheral wall of the column rod (14), and a friction block (33) is slidably connected inside the groove (32). The friction block (33) is connected to the inner wall of the groove (32) through a third spring (34). The surface of the friction block (33) facing the outside of the groove (32) is an isosceles trapezoid structure.

6. The continuous hole-making device for aircraft covering parts according to claim 3, characterized in that: The flattening mechanism includes a second ring frame (13). The second ring frame (13) is located between the lifting plate (20) and the first ring frame (10). The upper surface of the second ring frame (13) is connected to the bottom surface of the lifting plate (20) through a first spring (16). The suspension rod (9) passes through and is slidably connected to the second ring frame (13). A plurality of swing rods (17) are hinged on the peripheral wall of the second ring frame (13) at equal intervals along the circumferential direction. The end of the swing rod (17) away from the second ring frame (13) is hinged to a rolling roller (18), and the middle of the swing rod (17) is connected to the outer peripheral wall of the first ring frame (10) through a second spring (30).

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